1. The supplier needs the consent of the brand before signing a contract to sell the goods.
It is illegal to sell products without authorization.
3. According to Article 11 of the Patent Law, after a patent for invention and utility model is granted, except as otherwise provided in this Law, no unit or individual may exploit its patent without the permission of the patentee, that is, it may not manufacture, use, promise to sell, sell or import its patented product for production and business purposes, nor may it use its patented method and use, promise to sell, sell or import the product directly obtained according to the patented method.